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/*
* General declarations for cryptmount
* (C)Copyright 2005-2023, RW Penney
*/
/*
This file is part of cryptmount
cryptmount is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
cryptmount is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _CRYPTMOUNT_H
#define _CRYPTMOUNT_H
#include "config.h"
#include <sys/types.h>
#if HAVE_INTTYPES_H
# include <inttypes.h>
#else
# if HAVE_STDINT_H
# include <stdint.h>
# else
typedef unsigned char uint8_t;
typedef long int32_t;
typedef unsigned long uint32_t;
typedef long long int64_t;
typedef unsigned long long uint64_t;
# endif
# define PRId64 "lld"
# define SCNi64 "lli"
#endif
#ifdef HAVE_GETTEXT
# include <libintl.h>
# include <locale.h>
# define _(String) gettext(String)
# define gettext_noop(String) String
# define N_(String) gettext_noop(String)
#else
# define _(String) (String)
# define N_(String) String
# define textdomain(Domain) /* empty */
# define bindtextdomain(Package, Directory) /* empty */
#endif
extern uid_t cm_initial_uid;
enum /*! Exit-codes */
{
EXIT_OK = 0,
EXIT_BADOPT = 1,
EXIT_BADTGT = 2,
EXIT_BADEXEC = 3,
EXIT_PRIV = 100,
EXIT_INSECURE = 101
};
enum /*! Error flags */
{
ERR_NOERROR = 0,
WRN_UNCONFIG, /*!< Filesystem is already unmounted */
WRN_NOPASSWD,
WRN_LOWENTROPY,
WRN_MOUNTED, /*!< Filesystem is already mounted */
ERR_threshold = 0x10, /*!< Dividing-line between warnings & errors */
ERR_NOTSUPPORTED,
ERR_BADKEYFORMAT,
ERR_BADALGORITHM,
ERR_BADFILE, /*!< Serious problem with accessing file */
ERR_BADDECRYPT, /*!< Failure to extract cipher key from file */
ERR_BADENCRYPT,
ERR_MEMSPACE,
ERR_DMSETUP,
ERR_BADDEVICE,
ERR_BADIOCTL,
ERR_BADSUID,
ERR_BADPRIV,
ERR_BADMOUNT,
ERR_BADFSCK,
ERR_BADSWAP,
ERR_INSECURE,
ERR_BADPASSWD,
ERR_BADPARAM,
ERR_BADMUTEX,
ERR_ABORT
};
enum /*! Target configuration switches */
{
FLG_USER = 0x0001,
FLG_FSCK = 0x0002,
FLG_MKSWAP = 0x0004,
FLG_TRIM = 0x0008, /*!< trim/allow-discards on SSD writes */
FLG_BOOT_MASK = 0xf000,
FLG_BOOT_MOUNT = 0x1000,
FLG_BOOT_SWAP = 0x2000,
FLG_BOOT_PREP = 0x3000,
FLG_DEFAULTS = FLG_USER | FLG_FSCK
};
/*! @brief Information about the access key for an encrypted filesystem
*
* Depending on the choice of key-manager, this will either describe
* a separate key-file, or a header within the encrypted fileystem itself.
*
* \see keymanager_t, tgtdefn_t
*/
typedef struct keyinfo
{
const char *format; /*!< Type of key file, e.g. 'raw', 'libgcrypt' */
char *filename;
char *digestalg;
char *cipheralg;
long maxlen; /*!< Maximum number of bytes to read from keyfile */
unsigned retries; /*!< Limit on password-entry attempts */
} keyinfo_t;
/*! @brief Description of an available encrypted filesystem or device.
*
* This is typically extracted from a configuration file, containing
* details of its name, underlying device, encryption type etc.
* This structure can be used to form a linked-list of
* cryptmount filesystem-targets.
*
* \see parse_config().
*/
typedef struct tgtdefn
{
const char *ident; /*!< Unique identifying name */
unsigned flags; /*!< Configuration switches */
char *dev; /*!< Device node or raw file */
int64_t start, length; /*!< Starting sector + num of sectors (or 0, -1) */
char *dir; /*!< Mount-point */
char *fstype; /*!< Filesystem type */
char *mountoptions; /*!< Options passed to 'mount' command */
char *fsckoptions; /*!< Options passed to 'fsck' command */
char *loopdev; /*!< Loopback device to wrap around raw file */
char *supath; /*!< PATH to setup for commands run as root */
char *cipher; /*!< Cipher used on filesystem */
int64_t ivoffset; /*!< Cipher initialization-vector offset */
keyinfo_t key; /*!< Location/format of key */
struct tgtdefn *nx; /*!< Form into linked list */
} tgtdefn_t;
#endif /* _CRYPTMOUNT_H */
/*
* (C)Copyright 2005-2023, RW Penney
*/
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